From: Olaf Hering <olaf@aepfle.de>
To: Juergen Gross <jgross@suse.com>
Cc: ian.jackson@citrix.com, wei.liu2@citrix.com,
xen-devel@lists.xenproject.org
Subject: Re: [PATCH] tools/xenstore: add libdl dependency to libxenstore
Date: Fri, 9 Mar 2018 12:08:42 +0100 [thread overview]
Message-ID: <20180309110842.GD12975@aepfle.de> (raw)
In-Reply-To: <20180309102343.GB12975@aepfle.de>
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On Fri, Mar 09, Olaf Hering wrote:
> abuild@latitude:~> readelf -Wa /usr/lib64/libpython2.7.so | grep dlsym
> 00000000003e5e08 000000d900000007 R_X86_64_JUMP_SLOT 0000000000000000 dlsym@GLIBC_2.2.5 + 0
> 217: 0000000000000000 0 FUNC GLOBAL DEFAULT UND dlsym@GLIBC_2.2.5 (10)
> abuild@latitude:~> readelf -Wa /usr/lib64/libxenstore.so | grep dlsym
> 00000000002071b0 0000002b00000007 R_X86_64_JUMP_SLOT 0000000000000000 dlsym + 0
> 43: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND dlsym
The difference is SUSE_ASNEEDED=1 in environment.
If it is set, libxenstore.so will not link to libdl.so.
If it is not, libxenstore.so will link to libdl.so.
Since package building exports SUSE_ASNEEDED=1 usage of -lxenstore will
fail. Not sure how all the other packages use dlsym(), clearly xenstore
does something different.
Olaf
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next prev parent reply other threads:[~2018-03-09 11:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-07 10:17 [PATCH] tools/xenstore: add libdl dependency to libxenstore Juergen Gross
2018-03-07 10:29 ` Wei Liu
2018-03-07 11:01 ` Juergen Gross
2018-03-07 11:04 ` Wei Liu
2018-03-07 11:19 ` Ian Jackson
2018-03-07 11:49 ` Juergen Gross
2018-03-07 12:06 ` ian.jackson
2018-03-07 12:15 ` Juergen Gross
2018-03-09 8:36 ` Olaf Hering
2018-03-09 10:00 ` Juergen Gross
2018-03-09 10:23 ` Olaf Hering
2018-03-09 11:08 ` Olaf Hering [this message]
2018-03-09 16:12 ` Wei Liu
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